我更新了我的
Xcode,突然所有在故事板中连接到选择器的按钮都不再起作用了.所有以编程方式编码的按钮和手势识别器都可以工作.部分地,他们称同样的IBActions.
我做了什么…
只需在故事板中的视图中添加一个Button和一个Label.在View Controller .h中,我向Label添加了一个Outlet并声明了IBAction.
文件：
.H
#import <UIKit/UIKit.h> @interface ViewController : UIViewController @property (strong,nonatomic) IBOutlet UILabel *myLabel; -(IBAction)button_pressed:(id)sender; -(IBAction)swipe_active:(id)sender; @end
.M
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize myLabel;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view,typically from a nib.
UISwipeGestureRecognizer *swipe_left = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe_active:)];
swipe_left.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipe_left];
}
-(IBAction)button_pressed:(id)sender{
myLabel.text=@"Button is Running";
}
-(IBAction)swipe_active:(id)sender{
myLabel.text=@"Swipe is Running";
}
@end
只是按钮不起作用.
StoryBoard：@L_502_1@